High-power characteristics of multilayer piezoelectric ceramic transducers

Citation
Y. Sasaki et al., High-power characteristics of multilayer piezoelectric ceramic transducers, JPN J A P 1, 40(9B), 2001, pp. 5743-5746
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Volume
40
Issue
9B
Year of publication
2001
Pages
5743 - 5746
Database
ISI
SICI code
0021-4922(200109)40:9B<5743:HCOMPC>2.0.ZU;2-Z
Abstract
In this report, the behavior of the mechanical quality factor Q(m) for mult ilayer piezoelectric transducers which operate at a low to high vibratory v elocity is described. It has long been known that the Q(m) of multilayer pi ezoelectric devices, such as transformers and actuators, decreases when the number of ceramic layers in the devices is increased. In such devices, the output power converges to a saturated value with heat generation much lowe r than that which the value of Q(m) measured at low vibration velocity woul d suggest. This fact implies that the Q(m) strongly depends not only on the number of ceramic layers, but also on vibratory velocity and temperature. It appears that high-power and vibratory velocity characteristics of the Q( m) for multilayer piezoelectric transducers have not been studied sufficien tly. Taking the temperature factor into consideration, we used the electric al transient response method and equivalent circuit analysis to investigate the vibratory velocity characteristics of the Q(m) for multilayer piezoele ctric transducers.